[BUG] ANTHROPIC_AUTH_TOKEN renamed to CLAUDE_CODE_OAUTH_TOKEN

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

https://docs.claude.com/en/docs/claude-code/settings

The documentation still references ANTHROPIC_AUTH_TOKEN but Claude Code 2 is expecting CLAUDE_CODE_OAUTH_TOKEN

What Should Happen?

When configuring CLAUDE_AUTH_TOKEN it should be used a bearer token for sending requests

Error Messages/Logs

Steps to Reproduce

When configured with

{
  "env": {
    "ANTHROPIC_MODEL": "claude-sonnet-4-20250514",
    "ANTHROPIC_BASE_URL": "http://127.0.0.1:9001",
    "ANTHROPIC_AUTH_TOKEN": "sk-ant-oat01-myrealclaudetoken-T0vGhgAA",
    "BASH_DEFAULT_TIMEOUT_MS": "300000",
    "BASH_MAX_TIMEOUT_MS": "1800000"
  },
  "permissions": {
    "allow": [
      "Bash(mv:*)",
      "Bash(find:*)",
      "Bash(./gradlew *)"
    ],
    "deny": []
  }
}

claude -p "hi"

API Error: 401 {"type":"error","error":{"type":"authentication_error","message":"OAuth authentication is currently not supported."},"request_id":"req_011CTdZYhDAPuDravbsPrHMw"} · Please run /login

When configured with

{
  "env": {
    "ANTHROPIC_MODEL": "claude-sonnet-4-20250514",
    "ANTHROPIC_BASE_URL": "http://127.0.0.1:9001",
    "CLAUDE_CODE_OAUTH_TOKEN": "sk-ant-oat01-myrealclaudetoken-T0vGhgAA",
    "BASH_DEFAULT_TIMEOUT_MS": "300000",
    "BASH_MAX_TIMEOUT_MS": "1800000"
  },
  "permissions": {
    "allow": [
      "Bash(mv:*)",
      "Bash(find:*)",
      "Bash(./gradlew *)"
    ],
    "deny": []
  }
}

it works

claude -p "hi"

Weekly limit reached ∙ resets 10am

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

1.0.128

Claude Code Version

2.0.0

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_